调用sql语句实现SqlServer的备份还原,包括完整备份和差异备份
,因为执行备份还原需要一定的时间,因此需要设定 CommandTimeout参数.
///
/// 备份数据库 调用SQL语句
///
/// 备份文件名
/// 0表示完整备份,为1表示差异备份
///
public bool BackUPDB(string strFileName, int BackUpType)
{
//如果是差异备份,就是看一下文件是否存在,如果不存在,就不执行
if (BackUpType == 1 && File.Exists(strFileName) == false)
{
return false;
}
bool result = false;
try
{
string[] strConnSqlArr = strConnSql.Split(';');
string DBName = strConnSqlArr[4].ToString().Split('=')[1].ToString();//数据库名称
string backUp_full = string.Format("backup database {0} to disk = '{1}' ;", DBName, strFileName);
string backUp_Diff = string.Format("backup database {0} to disk='{1}' WITH DIFFERENTIAL ;", DBName, strFileName);
WKK.DBUtility.DbHelperSQL.ExecuteSql(BackUpType == 0 backUp_full : backUp_Diff, 600);
result = true;
}
catch (Exception ex)
{
Common.Log.WriteLog(string.Format("备份{0}数据库失败", BackUpType == 0 "完整" : "差异"), ex);
// System.Diagnostics.Debug.WriteLine(string.Format("备份{0}数据库失败", BackUpType == 0 "完整" : "差异"));
result = false;
}
finally
{
if (result == true)
{
string str_InfoContent = string.Format("备份{0}数据库成功", BackUpType == 0 "完整" : "差异");
// System.Diagnostics.Debug.WriteLine(str_InfoContent);
}
}
return result;
}
///
/// 还原数据库 使用Sql语句
///
/// 数据库名
/// 备份文件名
public bool RestoreDB(string strDbName, string strFileName)
{
bool result = false;
try
{
string strConnSql = ConfigurationSettings.AppSettings["ConnectionString"].ToString();
string[] strConnSqlArr = strConnSql.Split(';');
string DBName = strConnSqlArr[4].ToString().Split('=')[1].ToString();//数据库名称
#region 关闭所有访问数据库的进程,否则会导致数据库还原失败 闫二永 17:39 2014/3/19
string cmdText = String.Format("EXEC sp_KillThread @dbname='{0}'", DBName);
WKK.DBUtility.DbHelperSQL.connectionString = strConnSql.Replace(DBName, "master");
WKK.DBUtility.DbHelperSQL.ExecuteSql(cmdText);
#endregion
string Restore = string.Format("RESTORE DATABASE {0} FROM DISK='{1}'WITH replace", DBName, strFileName);
WKK.DBUtility.DbHelperSQL.ExecuteSql(Restore, 600);
result = true;
}
catch (Exception ex)
{
MessageBox.Show("还原数据库失败\r\n" + ex.Message, "系统提示!", MessageBoxButtons.OK, MessageBoxIcon.Warning);
Common.Log.WriteLog(string.Format("还原数据库失败--{0}", DateTime.Now.ToString()), ex);
result = false;
}
finally
{
//恢复成功后需要重启程序
if (result)
{
//
}
}
return result;
}
///
/// 执行一条SQL语句
///
/// sql语句
/// 等待连接打开的时间（以秒为单位）。 默认值为 15 秒。
///
public static int ExecuteSql(string SQLString, int setTimeOut)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
using (SqlCommand cmd = new SqlCommand(SQLString, connection))
{
try
{
connection.Open();
cmd.CommandTimeout = setTimeOut;
int rows = cmd.ExecuteNonQuery();
connection.Close();
return rows;
}
catch (System.Data.SqlClient.SqlException e)
{
connection.Close();
throw e;
}
}
}
}